Hand-punch.



No. 787,862. PATENTED APR. 18, 1.905. A. SKOW.

HAND PUNCH.

APPLICATION FILED mm: 9, 1902.

Patented. April 18, 1905.

PATENT OFFICE.

ANDREW snow, or NEWTON, IowA.

HAND-PUNCH.

SPECIFICATION forming part of Letters Patent No. 787,862, dated April 18, 1905.

Application filed June 9,1902. Serial No. 110.739

To (z whom it may concern:

Be it known that I, .AND'REW Snow, a citizen of the United States of America, and a resident of Newton, Jasper county, Iowa, have invented a new and useful Handdunch, of which the following is a specification.

The object of this invention is to provide an improved construction of a machine for punching sheet metal and kindred articles by the application of manual force.

My invention consists in the construction, arrangement, and combination of elements hereinafter set forth, pointed out in my claim, and illustrated by the accompanying drawings, in which Figure 1 is a side elevation of the complete tool. Fig. 2 is an elevation of the tool, partly in section, to reveal the interior construction. Fig. 3 is an end elevation of the complete tool.

In the construction of the tool as shown the numeral 10 designates a head furcated horizontally in its lower portion and furcated vertically in its upper portion, the forks of the head being at right angles to each other. A handle 11 is formed on and extends horizontally from the lower portion of the head 10. The lower arm 10 of the head 10 is apertured for the reception of a die or matrix 12, and the upper arm 10" of said head is formed with a bore for the reception of a vertically-sliding plunger or tool-holder 13. The upper end of the bore receiving the plunger 13 communicates with the lower portion of the upper fork of the head 10. A slot (dotted lines, Fig. 2) is formed in the upper portion of the plunger 13 and communicates or registers with apertures horizontally p sitioned in the arms of the upper fork of the head 10. A pivot-pin 14 is mounted in the apertures of the arms of the upper fork of the head 10 and traverses the slot in the upper end of the plunger 13. The upper end portion of the plunger 13 is formed with a recess 15 at right angles to the slot heretofore mentioned, and a tool-seat 16 is formed longitudinally of the plunger and communicates with said recess. A punch, matrix, or similar tool 17 may be mounted in the tool-seat 16 of the plunger and project therefrom at its lower end in alinement with the matrix or die 12. The punch may be retained in the plunger by frictional engagement of a locking-pin 18, driven into a transverse aperture or seat of the plunger and binding against the punch.

A lever-handle 19 is provided and formed with a circular and flattened head 19", shaped and arrai'iged to enter the recess 15 of the plunger 13. The face or perimeter of the head 19 is truly circular, and said head is apertured eccentric to the perimeter thereof for the reception of the pivot-pin 14. It will be observed that the central portion of the perimeter of the head 19 is nearest to the pin 14 and farthest from the handle 19. It follows, therefore, that when the parts are positioned and adjusted as shown an upward movement of the handle 19 will raise the plunger riding on the perimeter of the head 19* and a downward movement of the handle will depress the plunger by downward pressure of the lower portion of the perimeter of the head on the lower wall of the recess 15 of the plunger. Any rectilinear movement of the plunger effects a corresponding movement of the tool or punch attached thereto and carried thereby. Hence in the approximation of the handle 19 toward the handle 11 the punch would be pressed through a sheet of metal or other substance on the die or matrix 12, and a separation of the handles would effect a withdrawal of the punch from the matrix.

I have provided a forked stripper 20, mounted on the head 10 above the lower fork thereof and bent or curved into said fork to embrace the punch or tool above the sheet being punched. In the use of the stripper .20 the sheet is stripped from the tool or punch in the withdrawal or rearward movement of the latter.

I claim as my invention- A handpm1ch,com prising the head f urcated in its upper and lower portions at right angles to each other, a matrix in the lower portion of the head, a handle extending from the lower arm of the head, a plunger in the upper portion of the head and entering the lower furcate thereof and formed with a recess in its upper portion parallel with the upper furcate of the head and closed at its top, said plunger also formed with a slot in its upper portion at right angles to said recess, a fultherein, a punch in the plunger opposite the crum-pin connecting the upper arms of the matrix, and a stripper on the head and ex- 7 head through the slot in the plunger, which tended within the lower furcate thereof and pin extends across the recess in the plunger, forked for the passage of the punch. 5 5 a lever-handle formed with a head having a Signed by me at Newton, Iowa, this 18th circular perimeter, which head of the handle day of February, 1902.

is mounted in the recess in the upper portion T of the plunger and pivoted eccentrically on ANDRE SKOl/V' said fulcrum-pin, the perimeter of the han- Witnesses: I die-head arranged for engagement with the PHILIP SCHARF,

plunger at the top and bottom of the recess C. C. VEACH. 

